Portable oven



(NoModeL) O. F. KLEIN 85 W. H. WOODARD.

PORTABLE OVEN.

No. 249,843. Patented Nov. 22,1881. 51 H' r55 raw 11 -11 J I: II

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NITED STATES CHARLES F. KLEIN AND WILLiAM H. WOODARD, or oLEvELAND, ()HlO.

PORTABLE OVEN.

SPECIFICATION forming part of Letters Patent No. 249,843, dated November 22, 1881. Application filed June 18, 1881. (N01ll0d0l.)

To all whom it may concern Be it known that we, OHARLEs F. KLEIN and WILLIAM H. Y/VOODARD, of (Jleveland, in the county of Ouyahoga and State of Ohio, have invented new and useful Improvements in Portable Ovens, of which the following is a description.

Our invention in ovens relates to a peculiar device for connecting the top, bottom, and sides of the oven to each other, so that said several parts can be readily put together and taken apart, as may be desired; also, to certian other improvements in said ovens, hereinafter fully set forth and claimed, and illustrated in the annexed drawings, making a part of this specification, in which- Figure l is a front view of the oven. Fig. 2 is a side view. Fig. 3 is a horizontal transverse section. Fig.4 is a vertical transverse section. Figs. 5 and 6 are detached sections.

.Like letters of reference refer to like parts in the several views.

The several sides of the oven are joined'to each other as follows: The vertical edges of the two'sides A and B, Fig. 3, are so bent as to form a groove along each edge, as seen at G O.

It will be observed that the metal is bent inward to form said grooves, thereby forming a shoulder, a, on one side of the groove. The purpose of said shoulder will presently be shown. The upper and bottomedges of the sides are bent inward at right angles,forming flanges b and a, respectively, along the inner edges of said sides, as seen in Figs. 3, 4, and 5. The two sides D and E, Fig. 3, have each of their vertical edges turned inward at right angle, forming flanges F and G, Fig. 3. Said figure represents a horizontal transverse section, and in which it will be seen that the flanges are adapted to fit in the grooves (l of the sides A and B, thereby locking the four sides of the oven firmly together at the corners,'substantially as shown in Fig. 3. The two sides 1) and E are prevented from being pushed inwardly by the returns or flanges F G impinging upon the shoulders a of the grooves O, and at the same time they are prevented from being forced outward by the said returns or flanges bearing against the outer sides of the grooves-that is to say, the flanges of the sidesD and E-for, being held inthe grooves G of the sides Aand B, the sides of said grooves serve as shoulders on either side of the flanges, which prevents the sides D E of the oven from being pushed inward or outward. The sides A B are prevented from being forced inward or outward by means hereinafter described.

The top of the oven is secured to the sides as follows: As seen in the drawings, H represents the top of the oven. The edges of its four sides are turned down at right angles, forming a flange, I, on each of the four sides, as seen in the drawings. The central portion of the top is depressed, leaving a narrow ridge or rim around the edge of the top, as seen at 6, Figs. 4 and 6. Said rim covers the edges of the sides, while the flanges I of the top lap down over the sides externally. The depressed central part of the top fits down in between the four sides and forms a shoulderfor each side, against which the inturned edges 1) of said sides abut, as seen in Fig. 4, thereby prevent ing the sides A and B of the even from being pressed inward, but which cannot be forced outward, as they are locked in the return or flange O of the sides D and E, substantially as shown in Figs. 3 and 4.

The top of the oven is secured in place bya slide, J, Fig. 5. Said figure represents a portion of the under side of the top of the oven and parts of two sides, in order to show the application of the slide for the purpose specified. Said slide consists of a piece of sheet metal having therein slots 1 and 2, in which,

are rivets, whereby the slides are made fast to the under side of the top, not so tight but that the slides can be moved.

In order to put on the top, the slides are drawn inward, so that they may be out of the way of the flanges b of the sides. The top is put on so that the flanges I thereof will lap down upon the sides of the oven. The slides J are then forced outward and undertheflanges b of the sides, as shown in Figs. 4. and 6', thus firmly uniting the top to the sides of the oven, but which can be easily removed therefrom when the slides are drawn back.

The bottom 0 of the oven may be secured to the sides thereof substantially in the same way as is the top; or for that purpose straps or ears K, of sheet metal, may be used. (See Figs. 3 and 4.) One end of the cars is soldered or otherwise secured to the bottom of the oven, one on each opposite side, and so far in from the sides of the oven as to touch or be at the edge of the flange 0, against which the edges of said flange abut. The flanges thus abutting against the ears prevent the lower ends of the sides from being pushed inward, as the shoulders of the depressed top prevent thenpper ends of the sides from being pushed inward.

The upper ends of the ears above alluded to are bent over against the sides of the oven and secured thereto by a screw-bolt, i, thereby securely connecting the bottom to the sides of the oven, as seen in Fig. 4.

From the above description it \villbe obvious that the sides, top, and bottom of the oven are all put together without soldering; hence when the several parts of the oven are put together they can be readily taken apart and the several pieces piled one upon the other, forming a small package as compared with the pieces when put together forming an oven, thereby reducing the expense of shipping the article from first-class freight to the third or fourth class, also making the ovens more convenient to handle and less liable to be bruised in transportation.

L, Figs. 3 and 4, is a damper or spreader covering the hole M in the bottom of the oven. To the top of the damper or sprcaderis secured a bar, N, in each end of which is fixed the lower end of a rod, 0, extending upward therefrom in the corners of the oven and through the top. The projecting en ds above the top are threaded and provided with a nut, P, whereby the rods may be screwed upward or downward for opening and closing the damper for the admission of more or less heat into the oven from the burner.

In the door A of the oven is a plate of glass, B, through which may be seen and watched the contents of the oven while cooking without opening the door for that purpose or admitting to the oven an inflow of cold air. B,

Fig. 4, is an inner top of the oven, forming with the outer one, H, an air-chamber, 0. By

means of the air-chamber the heat is retained in the oven above the cooking food a longer time and in greater degree, so that the baking is more uniformly done than when the oven is without such a chamber.

The spreader above alluded to in this class of stoves is ordinarily a fixture. Therefore it is incapable of regulating the amount of heat admitted to the oven. lts ordinary useis notto regulate the heat, but to spread it from the center to the sides of theoven. Ouradjustable spreader becomes a means of regulating the heat in the oven, and at the same time serves the purpose of a spreader as well as one that is stationary. Furthermore, by having the spreader adjustable it can be readily adapted to either an oil or gasoline stove, for the distance that the spreader should be above the opening in an oven for a gasoline-stove will not be suitable for an oil-burning one, owing to the different positions of the flames in the two stoves.

What we claim as our invention, and desire to secure by Letters Patent, is-

1. In combination with the sides of the oven and top thereof, a slotted side, J, attached to the said top and adapted to slide under the inward-projecting flanges b of the sides, substantially as set forth, and for the purpose specified.

2. The combination of the top, bottom, and sides of the herein-described oven, the several parts constructed and joined to each other as set forth, air-chamber c, and an adjustable spreader operated by ad j ustingscrew rods and nuts, all constructed and arranged in the manner substantially as set forth, and for the purposes specified.

In testimony whereof we aflix our signatures in presence of two witnesses.

Witnesses:

J. H. BURRIDGE, W. H. BURRIDGE. 

